José Mourinho has branded Jürgen Klopp and Arsène Wenger unethical for discussing Manchester United’s pursuit of Paul Pogba and confirmed he expects to sign the Juventus midfielder before the Premier League season begins.

Pogba is poised to rejoin United for a world-record fee of around £100m. The proposed deal has been greeted with incredulity by Wenger, who described the sum as “completely crazy”, while Klopp said he would prefer not to work in a game where £100m transfers became the norm.

Their comments about United’s transfer business have riled Mourinho, who has not taken long to direct criticism from Old Trafford and claimed there would have been an outcry had the roles been reversed. “I only speak about us,” the United manager said of this summer’s Premier League transfers. “I heard two of my colleagues from other clubs already speaking about us. I do not like that. It is not ethical. There are things that when I do are not ethical and when others do it everything is normal and nobody says that. I do not speak about the others. They can do what they want.

“Our market was good. We made decisions and decided to bring four players, not 10, that are Manchester United level. Four that we think can really improve the squad and not just be one more. This is the profile of our market. A young defender that needs time to be a top one but who has top potential [Eric Bailly]. A creative player that we know the quality [Henrikh Mkhitaryan], a super striker [Zlatan Ibrahimovic], and we are going to get a very good midfield player [Pogba]. We try for balance. I am happy with my squad. I am happy with the effort of the club. The others, it is their problem.”

Klopp said he preferred to build a team than “collect top players” and, of spending £100m on one, added: “The day that this is football, I’m not in a job any more.” Mourinho responded: “He was one of them but I don’t comment. He made comments about us but I don’t make comments about him or his club.”

United face the champions, Leicester City, in the Community Shield on Sunday before opening their Premier League campaign at Bournemouth a week later. “Paul Pogba is a Juventus player until he isn’t, officially, so we stay like this,” Mourinho said. “The market closes on 31 August but I think my club is trying to do everything to close our market before the 14th. Normally, next week, we will have our squad closed.”